Heater.



No. 825,003. PATENTED JULY 3, 1906,

w. L. PAINTER.

HEATER.

APPLICATION FILED SBPT.14, 1905.

3 SHEETS-SHEET 1.

1n: NORRIS PETERS c0., wasnmawn, n c

No. 825,003. PATBNTED JULY 3, 1906.

W. L. PAINTER.

HEATER.

APPLICATION FILED SEPT. 14, 1905.

V s SHEETS-SHEET Q.

PATENTBD JULY 3, 1906.

W. L. PAINTER.

HEATER.

APPLICATION FILED SEPT. 14, 1905.

3 SHEETS-SHEET 3 m: NDRAIS PETERS co.. WASHINGTON, n c.

WELKER L. PAINTER, OF GRAND VIEW, INDIANA.

HEATER.

Specification of Letters Patent.

Patented July 3, 1906.

Application filed September 14, 1905. Serial No. 278,454.

To all whom, it may concern.-

Be it known that I, WELKER L. PAINTER, a citizen of the United States, residing at Grand View, in the county of Spencer and State of Indiana, have invented certain new and useful Improvements in Heaters, of which the following is a specification.

This invention relates to the general class of heaters having twyers and a forced airblast, and is especially well adapted for use in heating tires.

The object of the invention is to provide an efiicient heater with a wide range of utility at a moderate cost.

In the accompanying drawings, which serve to illustrate two embodiments of the invention, Figure 1 is a general side elevation of the heater adapted for heating tires. Fig. 2 is a diametrical section of the main part of the heater on a larger scale than Fig. 1. Fig. 3 is a plan of the heater with a part of the base-plate broken away at the middle part. Fig. 4 is an enlarged sectional detail of one of the annular twyers. Figs. 5 and 6 illustrate an embodiment of the invention as a heater for a crucible furnace. Fig. 5 is a vertical section at line 00 in Fig. 6, and Fig. 6 is a horizontal section at line as in Fig. 5.

Referring, primarily, to the first four figures of the drawings, 1 is a base-frame, preferably of metal, in which is mounted a fancasing 2, containing a fan or blower 3.

It may be stated here that while any known blower or air-forcing device can be employed and such device can be run either by hand or power, as here shown, the fan has an upright axis and takes in air at the bottom of the casing and delivers it at the top thereof, and it is provided with a pulley 4 on its arbor, by which it may be driven.

Supported on the frame is a circular baseplate 5, which has a raised rim 6 at its margin. On this plate 5 are secured concentric annular twyers 7, (three are shown in Figs. 2 and 3,) which are or may be semicircular in crosssection, as best seen in Fig. 3, and provided with base-flanges to receive bolts or other securing devices for fastening them down on the base-plate 5. The twyers have in them perforations 8, as many as may be desired, some being in the crown and others alon the sides. The outlet for air at the top 01 the fan-casing is connected by air-ducts 9 with the respective twyers, said ducts being disposed below the base-plate and connected with the twyers through the latter, as indicated in dotted lines at 10 in Fig. 3.

Fig. 1 shows a hood 11 suspended over the heater and adapted to be closed down over the same when desired and raised when desired. In each air-duct 9 is a suitable damper or valve 12,by which any one or more of the ducts may be closed if the twyer corresponding to that duct is not to be used, or the air-supply through any duct maybe regulated by manipulating its valve or damper.

With a twyer three inches wide and having three sets of perforations orjet-apertures, disposed as shown, a bed of live coals eight inches wide may be obtained. By employing three concentric annular twyers, as shown, the heater may be employed for heating tires having a wide range of diameters; but more or less of the twyers may be employed and each may be supplied with air through a separate air duct or ducts.

Ordinarily the operation will be as follows: If but one twyer is to be used, the others will be cut oif, and coal or coke will be covered over the twyer to be used and then ignited. The hood is now lowered and the blower set in motion. When the fire is well started and a pro er bed of fire established, the .blast is cut 0 the hood lifted, and the tire (T in Fig. 1) placed. The hood is then again lowered and the blast turned on.

The means for counterbalancing and for raising and lowering the hood may be that shown in Fig. 1, which comprises chains or wire cords 15, pulleys 16, and wei hts 17 and 18. The latter may have a handle 19 to enable the operator to manipulate the hood.

The construction illustrated in Figs. 5 and 6 is very similar to that already described; but in this construction of Figs. 5 and 6 the base-plate 5 is so shaped as to form a cuplike receptacle for a crucible C and there are two air-ducts 9 to each of the twyers 7 In this construction also it is convenient to form the twyers integrally with the baseplate and to provide an outer plate 5 between which and the plate 5 is an air space or jacket 13, divided by partitions 14. The ducts admit air to the spaces in the jacket, which are open to the respective twyers. Fig. 5 shows the coal between the base-plate and the crucible.

Having thus described my invention, I claim 1. A heater, having a base-plate closed against natural draft, annular, perforated twyers on said base-plate, a support and a blower under said plate, air-ducts connecting the blower with the respective annular twyers, and cut-off devices in said ducts for regulating the flow of air through the same.

2. A heater, having a horizontally-disposed base -plate closed against natural draft, concentric, annular twyers on said base-plate, each twyer having a plurality of rows of small perforations extending its entire length, a support and a blower underneath said plate, air-ducts leading from the blower to the respective twyers, and cut-off devices in saidducts below the base-plate.

3. A heater, having a base-plate closed against natural draft, a support under the center of said plate, endless, annular, perforated twyers on the said plate, a fan-casing mounted in the support under the center of said plate, a rotating fan in said casing and turning about an upright axis, air-ducts leading from said casing to the respective twyers, and means in said ducts for controlling the flow of air through the same.

4. A heater, comprising a base-plate 5, disposed in a substantially horizontal position, concentricallydisposed, annular tWyers 7 mounted on said plate, said twyers, having perforations as described, a support under said plate, a fan-casing 2 under said plate, a rotating fan 3 therein, air-ducts 9 connecting the fan-casing with the respective twyers, means in said ducts for regulating the flow of air through the same, and an adjustable hood 11, over the said base-plate and twyers.

In witness whereof I have hereunto signed my name, this 28th day of August, 1905, in the presence of two subscribing Witnesses.

WELKER L. PAINTER.

Witnesses:

MILO L. MILLER, WILLIAM RIMsTIDT. 

